JPS5930213A - 再録音防止を施した録音の方法 - Google Patents

再録音防止を施した録音の方法

Info

Publication number
JPS5930213A
JPS5930213A JP14120382A JP14120382A JPS5930213A JP S5930213 A JPS5930213 A JP S5930213A JP 14120382 A JP14120382 A JP 14120382A JP 14120382 A JP14120382 A JP 14120382A JP S5930213 A JPS5930213 A JP S5930213A
Authority
JP
Japan
Prior art keywords
sound
signal
recorded
alternating current
magnetic tape
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14120382A
Other languages
English (en)
Inventor
Kazuo Okano
岡野　一男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP14120382A priority Critical patent/JPS5930213A/ja
Publication of JPS5930213A publication Critical patent/JPS5930213A/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • G11B20/00818—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction limits the signal quality, e.g. by low-pass filtering of audio signals or by reducing the resolution of video signals
    • G11B20/00826—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction limits the signal quality, e.g. by low-pass filtering of audio signals or by reducing the resolution of video signals wherein a spoiler signal is added to degrade the signal quality
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G11B2020/10537—Audio or video recording
    • G11B2020/10546—Audio or video recording specifically adapted for audio data

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 この発明は、レコード又は磁気テープに録ｉされた信号
が再録音されるのを防止するために発明された録音の方
法である。
従来、レコード又は磁気テープに録音された信号は簡単
に、磁気テープに再録音されてしまった。これを防止す
るには、レコードを製造する時、録音しようとする信号
■と、他に交流信号■を一緒に録音する。
この交流信号■を、録音機の録音へ、ドのバイアス交流
の周波数■と干渉する周波数に選んでおけば、この交流
信号■を一緒に録音したレコードから、磁気テープに再
録音しようとすると、その録音機の録音ヘッドのバイア
ス交流■と交流信号■と干渉を起して磁気テープに録音
されてしまい、再録音の目的は達せられなくなる。しか
し。
レコードをそのまま再生する場合は、−緒に録音されて
いる交流信号■は可聴外周波数なので何ら問題はない。

Claims (1)

    【特許請求の範囲】
  1. 音声信号、情報信号及び映像信号を、録音機の録音へ、
    ドのバイアス交流と干渉を起す周波数の交流とを、−緒
    に録音することを特徴とする録音の方法。
JP14120382A 1982-08-14 1982-08-14 再録音防止を施した録音の方法 Pending JPS5930213A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14120382A JPS5930213A (ja) 1982-08-14 1982-08-14 再録音防止を施した録音の方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14120382A JPS5930213A (ja) 1982-08-14 1982-08-14 再録音防止を施した録音の方法

Publications (1)

Publication Number Publication Date
JPS5930213A true JPS5930213A (ja) 1984-02-17

Family

ID=15286540

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14120382A Pending JPS5930213A (ja) 1982-08-14 1982-08-14 再録音防止を施した録音の方法

Country Status (1)

Country Link
JP (1) JPS5930213A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03113347A (ja) * 1989-09-27 1991-05-14 Shimadzu Corp データ処理機能つき分光光度計

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03113347A (ja) * 1989-09-27 1991-05-14 Shimadzu Corp データ処理機能つき分光光度計
JPH0612336B2 (ja) * 1989-09-27 1994-02-16 株式会社島津製作所 データ処理機能つき分光光度計

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